20262222154 has 4 divisors (see below), whose sum is σ = 30393333234. Its totient is φ = 10131111076.

The previous prime is 20262222143. The next prime is 20262222173. The reversal of 20262222154 is 45122226202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13566891529 + 6695330625 = 116477^2 + 81825^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5065555537 + ... + 5065555540.

Almost surely, 2^20262222154 is an apocalyptic number.

20262222154 is a deficient number, since it is larger than the sum of its proper divisors (10131111080).

20262222154 is a wasteful number, since it uses less digits than its factorization.

20262222154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10131111079.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20262222154 its reverse (45122226202), we get a palindrome (65384448356).

The spelling of 20262222154 in words is "twenty billion, two hundred sixty-two million, two hundred twenty-two thousand, one hundred fifty-four".